Your phone has already introduced itself.

Take this home

1. This QR code was on a slide. Would you scan one stuck on a parking meter? QR phishing ("quishing") works exactly like this.
2. Every site sees your IP, network and device, with no click and no prompt.
3. Location, camera and microphone need your OK. Read the prompt before you tap "Allow".
4. Review site permissions: iPhone: Settings › Apps › Safari › Location. Android: Chrome › Settings › Site settings.
5. On public Wi-Fi, a VPN or iCloud Private Relay hides your real IP and location.

Next: your exact location.

If you allow it, your position appears live on the presenter's screen. That's the whole point.

Your phone will now ask for permission. Saying no is perfectly fine.

Deleted after the session. If you're far from the venue, only a ~1 km area is shown.

Waiting for your permission and a GPS fix…